Mike Oldfield’s Tubular Bells is a beautiful piece of music. I’ve never seen the Exorcist, but I’ll tell you, I had Tubular Bells on 8-Track when I was a teenager and listened to it all the time. In fact, it is now stored on my phone as a potential ringtone, albeit not active at the moment.
It may be impossible to hear it and not think about the movie, but I heard the music without seeing its use in context and that has made all the difference.